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Conceptual Chemistry Anicito - Atoms and Atomic Theory Flashcards | StudBud
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Conceptual Chemistry Anicito - Atoms and Atomic Theory
Conceptual Chemistry Anicito - Atoms and Atomic Theory
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atoms and atomic theory
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Questions
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Answers
1
JJ Thompson
Discovered Electrons
Discovered Protons
Discovered Atoms
Found out that Electrons travel around the nucleus
2
What is the atomic number of the element shown?
O
16
8
15.999
3
What is the atomic symbol for the element shown?
15.999
Ox
8
O
4
The neutral particle in the nucleus of an atom
neutron
electron
proton
quark
5
How many electrons does an atom of zinc have?
65
Zn
35
30
6
How many protons does an oxygen atom have?
8
O
16
15.999
7
Two isotopes of an element have the same number of: (
clue: same atomic number but different mass number
)
protons
neutrons
pokemons
photons
8
Dalton's theory of atomic structure states that
all of these
all atoms of an element have the same mass
compounds are made of more than one element
atoms of different elements have different masses
9
What is the atomic number of the element shown?
65
35
Zn
30
10
Strong force
holds atoms together
True
False
11
The Bohr model shows:
All of the valence electrons only
All of the atom's protons in orbits
All of the neutrons in orbits
All of the atom's electrons in orbits
12
What did Democritus propose about matter?
It can be created and destroyed.
It is made of indivisible particles called atoms.
It is made of only one type of particle.
It is made of continuous substances.
13
What is the mass number of the element shown?
Zn
30
35
65
14
How many neutrons does an atom of zinc have?
35
Zn
65
30
15
The first atomic theory was proposed by ________.
Chadwick
Lavoisier
Dalton
Thomson
16
The negative particle outside of the nucleus of an atom
proton
quark
neutron
electron
17
The positive particle in the nucleus of an atom
proton
electron
neutron
quark
18
The average mass of all the isotopes for a given atom is called ___________.
average nuclear mass
average mass number
average atomic number
average atomic mass
19
How many neutrons does an oxygen atom have?
15.999
16
O
8
20
Rutherford's gold foil experiment...
Atom is like the raisins in plum pudding
Discovered Neutron
Discovered the nucleus contains most of the mass & rest is empty space
Discovered electron
21
According to Dalton's theory, elements...
are always solids
cointain at least two different kinds of atom
can be split up into simpler substances
contain only one type of atom
22
The gold foil experiment proved that most of the atom was empty space.
True
False
23
How many protons are in each isotope of Magnesium?
24
It depends on the isotope
12
25
24
How many protons does an atom of zinc have?
65
Zn
35
30
25
What is the atomic symbol for the element shown?
65
Zn
30
Zinc
26
Rutherford's gold foil experiment
confirmed the plum pudding model
showed positive charges located in a dense nucleus
proved the existence of electrons
proved the existence of isotopes
27
In Niels Bohr's model of the atom, electrons move
like beach balls on water waves.
like popcorn in a popcorn popper.
like planets orbiting the Sun.
like balls rolling down a hill.
28
Thompson's cathode ray experiment discovered . . .
Neutrons
Protons
Quarks
Electrons
29
According to atomic theory, electrons are usually found:
in the carpet as you shock your pet
outside the nucleus
in the atomic nucleus
in rain clouds as lighting
30
How many electrons does an oxygen atom have?
16
8
15.999
O
31
What is the mass number of the element shown?
O
15.999
16
8
32
What is an isotope?
An atom of the same kind with a different amount of protons
FAKE WORD
An atom of the same kind with different amount of electrons
An atom of the same kind with different amount of neutrons
33
What is the mass of the isotope: Chromium-58
58
none of the above
24
34
